The present study was led during two crop years (during years 2011 and 2012) at the Research station Inera-gimbi to evaluate the performances of 11 varieties of rain rice under the édapho-climatic conditions of the sector of Bundi. Ten varieties of rain rice (BAIBINGE 1, INERA 7, INERA 8, IRAT 112, IRAT 216, IRAT 341, IR 47686-13-2-2, NERICA 4, NERICA 7, LIENGE) were used in comparison with local witness NGAMBI. The adopted experimental device was that of the complete blocks randomized with three repetitions. Each variety occupied a compartmental dimension of 5 m X 2 m. Several agronomic parameters, namely the percentage of recovery, tillering at 45 days after sowing, the period of 50 % flowering, the period of maturation to 50 %, the height with the insertion of ear, the height of the plants with maturity, the behavior of the varieties vis-a-vis the pyriculariose, the length of the panicles and the output were evaluated with harvest. The data obtained were evaluated by using the analysis of variance (ANOVA). The comparison of average was carried out using the smallest significant difference (PPDS) with the threshold of probability of 5% and 1%. The results obtained indicate that there are significant differences between the varieties for all the evaluated parameters. Five varieties (IR 47686-13-2-2, INERA 8, LIENGE, IRAT 112, and NERICA 7) gave outputs significantly higher than local witness NGAMBI. These varieties in addition had a good resistance to the foliar pyriculariose. So they were regarded as powerful under the local conditions of Gimbi.

A study was led to the station of the National Institute for the Study and the Agronomic research (INERA) of Gimbi, sector of Bundi, territory of Seke-Banza, province of Kongo Central, Democratic République of Congo, during the farming years 2011/2012 and 2012/2013 in order to evaluate the various clones of cassava cultivated in the agroecologic conditions in this part of the country. Thirteen cultivars of manioc including 11 clones (2008/003, 2008/019, 2008/0223, 2008/0330, 2007/0305, 2007/021, 2007/071, 2007/030, 2007/084, 2007/089, 2007/0102) and 2 witnesses:local (Anti-ota) and improved (Obama) were evaluated in a test installed according to the device of the blocks completely randomized with 4 repetitions. Several parameters were observed to know the date of plantation, the duration of the time of the plantation to the recovery, percentage of recovery 1st MAP, the incidence and severity of diseases (CMD, CAD, CBB…), the ravageurs (white Fly, Thrips, CART and others),le diameter with the collet, the height of the plants with 3,6,9 and 12th MAP, the height of ramification, the number of collected seedlings, the index of harvest,le a number of marketable and nonmarketable roots, the color of pulp, the output of tuberoses roots. The results obtained indicate that in 12 months after plantation clones 2007/0305 with 18,937 T/ha, 2008/0223 with 18,852 T/ha, 2007/0102 with 18,410 T/ha, 2008/003 with 18,312 T/ha and 2008/0330 with 17,873 T/ha had an output higher than the improved witnesses than local (Obama with 17,610 T/ha, Anti-ota with 9,335 T/ha). The African mosaic was observed at the local witness with a weak incidence. In spite of the significant differences observed between the performances of these varieties, one noted in general that the averages of the four evaluated parameters expressed a tendency to the growth up to 15 MAP.